vhost: cache used event for better performance

[mirror_ubuntu-zesty-kernel.git] / drivers / vhost / vhost.h

diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 78f3c5fc02e47d92bced439249a4bb3491e42e9a..a9cbbb148f460e52ef8a051770fd32f616696f14 100644 (file)
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -107,6 +107,9 @@ struct vhost_virtqueue {
        /* Last index we used. */
        u16 last_used_idx;
 
+       /* Last used evet we've seen */
+       u16 last_used_event;
+
        /* Used flags */
        u16 used_flags;